*{
    margin: 0;
    padding: 0;
}
html{
    font-size: 10px;
}
main{
    width: 30rem;
    height: 5rem;
    margin: 2rem auto;
    background-color: silver;

    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-content: center;

    align-items: center;

}

main button{
    width: 5rem;
    height: 2rem;
}